Welcome to Trouble Free Pool

We would like to welcome you to TFP, the webs leading Pool related website. We invite you to please Register to create a new account. Doing this will give you full access to the forums, where you will be able to receive personalized advice concerning your pool. We hope to see you soon!

after the Rains

Hi

I just wanted to know if this is normal.

On 5-12, my FC was 14 and CC was 0 (after several days at or above SLAM levels). I did the overnight test and my FC only went down by 1 (sunny days) and the CC stayed at 0. I assume I was in the clear. Now 4 days later and after probably every bit of 1.5+ inches of hard rain, I tested my FC. It is 5 (tested 2X to be sure) and the CC was .5
Is it expected for the FC to drop that much in 4 days? I am thinking so b/c of getting so much rain water (my pool is almost to the top).

(This is the first week of having my TF100 test kit. I have tested the FC and CC and CYA multiple times--mostly to get used to the process and verify I am doing things correctly. I plan on doing all the weekly testing on Sundays and the small kit of FC and PH daily to verify FC at +/- 5ppm.)

after the Rains

I see your pool is above ground so you won't have rain water runoff into it like you could with an inground. Still rain fall has little effect on your water chemistry. It's not like you replaced 1/2 your pool water. That would mess the chemistry up. You just had some rain which doesn't effect your chemistry as much as you think it would. 😎

Re: after the Rains

I haven't noticed too much change after rains, until we had around 16 inches of rain in 24 hours . I saw all of my levels drop quite dramatically, after doing some calculations, I essentially had around 20% of my water replaced. Hopefully that won't happen again for a while!